Although the captain is still young, his response is not slow. Regardless of pressing the APP, the stall change is the first thing, and the first action of the stall change is to disconnect the automatic driving and manually operate.

The shaking change was so great that the captain almost reflexively clenched the steering stick and put both hands on the steering stick, in order to prevent an unexpected change in state when the automatic driving was disconnected.

The captain pressed the autopilot disconnect button on the left-hand side, and the autopilot disconnect warning sounded, and at the moment when the autopilot disconnect warning sounded, the jitter disappeared at the same time, and the red and black speed bands retracted to the normal position, and the whole process lasted for even a second

The captain looked at the altitude, and the plane was still in a stable state, that is, he said: "It's still more than a thousand feet now, and now it's stable, let's continue to approach!" ”

According to the company's SOP, if there is a stall on the five sides, the captain can continue to approach if the altitude is more than 1,000 feet after the stall is stabilized. Therefore, the captain's decision-making is no problem, and he and Xu Qing have no opinion.

This instantaneous jolt causes the G-value to rise, causing the maximum speed to increase, resulting in jitter changes, although rare, but not uncommon, as long as the aircraft is stable, the captain feels that there is no problem in continuing the approach.

The captain looked at the first and second officers without any opinion, holding the steering stick with one hand and preparing to press the autopilot connection button of the A channel with the other.

As soon as the autopilot button on the A channel was pressed, the green light on it lit up, and the FMA also showed that the autopilot had been turned on.

Not long after the automatic driving was turned on, there was another feeling of physical pressure, and the captain immediately felt that something was wrong. Sure enough, the red and black speed band stretched again, and seeing that the lever was about to shake again, the captain immediately made a decision and slightly increased the throttle to make the speed rise slightly, so as to avoid entering the red and black speed band. However, the throttle should not be increased too much, otherwise the speed will increase too much and the maximum speed will be exceeded, especially now that the flaps have been put to thirty, the speed range is already very good. Either stalling or overspeeding, the captain needs to be meticulous in maneuvering.

At this time, the captain only overrode the automatic throttle and did not disconnect the autopilot.

There was obviously a certain gap between what the captain wanted and the reality, and not long after the captain controlled the increase in speed, a strong gust of wind hit, and the speed that had just been raised followed the deflated ball, and fell down in a hurry.

At this time, the red and black speed band has begun to retract, but the airspeed drops faster, directly catching up with the red and black speed band, and the jitter comes instantly.

The headwind didn't last long, and at the same time, the captain added some throttle, and the red and black speed bands began to return to normal, another jiggle that lasted less than a second.

This time it was still above a thousand feet, and in principle, they could still continue to approach, but the captain was going crazy, and he finally knew why the front plane had go-around in five sides and six nautical miles, and this feeling of dancing on the tip of the knife was really uncomfortable.

Below 1,000 feet, as long as this situation occurs again, then they have to go back to flight, and the front aircraft even goes back to flight at 2,000 feet, the criteria for stable approach should be very different from each company, and the captain of the front aircraft chose to go back to fly before the decision point of stable approach, that is, the following situation is even worse!

As the captain expected, with the experience of the previous car, the plane that had just stabilized was undulating like a swing. This time, the speed was crazy upward, and the captain couldn't stop the airspeed from rising even if he received the throttle to the slow train.

Just as the captain was about to disconnect the autopilot belt and lower the lever and slow down, the airspeed upward trend suddenly accelerated, directly into the red and black speed band above.

This time it's not a jitte warning, it's a tick-tick speeding warning.

Overspeed warning only audible warning, overspeeding audible warning will only be displayed if the speed drops below the airspeed limit.

This time, unlike the previous ones, which only lasted for a while, the speeding warning kept going. The captain directly disconnected the autopilot, slightly with the rod, he had to correct the deviation first, and then go around, this state could not approach at all.

"Let's correct the deviation and go back to flying!" The captain made a direct decision, and he could not guarantee safety in this constant state of instability.

Xu Qing couldn't help the captain's decision, and the constant instability made him feel that this approach was not safe, but according to the regulations, they met the approach regulations, and he had no reason to call out for a go-around. However, the captain decided to go back to flying after weighing it up, and that couldn't have been better.

After the captain disconnected the autopilot, he pressed the airspeed back into the limit through the lever, and then gave the go-around password.

Fuel the throttle, press TOGA, the captain began to bring the lever to raise the nose, set the go-around thrust, one pair according to the go-around procedure, the flaps received fifteen, after showing the positive ascent rate, and then put the landing gear on, and the last pair notified the control: "Blue 9846, go-around!" ”

"Blue 9846, can follow the standard go-around procedure, on the altitude 3600, keep reporting!" Control the Command Road.

"Standard go-around procedures, on altitude 3600, keep reporting!" While reciting a pair, as the airspeed increases, the flaps receive the flaps five.

3,600 meters is the standard go-around altitude for runway 21, and they need to keep one side to 2.7 nautical miles, and turn right at an altitude of 7,400 feet or more.

The go-around procedures were reviewed during the approach preparations, and the entire crew was naturally familiar with it.

After going up to 3,600 meters, the controller asked the reason for the go-around, which was a routine inquiry.

The captain's reply was that the turbulence was too strong to maintain flight data, and as for the need for re-approach, the captain's answer was not to attempt re-approach.

Interestingly, after the resumption of the Blue 9846 was announced, the follow-up approach planes also stopped their approaches one after another, and there was no interest in trying it on the fifth side at all

Three planes in a row have been diverted, and there is really no need for them to descend again to wade into the troubled waters below.

After the resumption of flight, it naturally involved the location of the alternate landing.

In fact, the fastest is to divert to the airport in the province. According to the gas information, the meteorological conditions of some airports in the province are far better than those of K City, and the diversion time is basically within 40 minutes.

However, this captain does not have the qualifications of a special airport in the province and cannot land at the airport in the province, so he can only choose the most conventional city C, and the alternate landing time is more than one hour, and there is a sub-base of Blue Airlines in City C, and the support is also good.

After communicating with the operation control through the satellite phone, the final decision was to divert the landing. And listening to the method of operation control, the weather forecast they got, the strong wind turbulence in K city will last for a while, and there will even be thunderstorms at night, Xu Qing After they land in C city, it is very likely that they will spend the night in C city.

Hearing that he was going to spend the night, Xu Qing was also excited, he hadn't gone out for the night yet!